Lock



FIG. 1 is a perspective view of a lock embodying the invention.

FIG. 2 is a first end view of the lock shown in FIG. 1.

FIG. 3 is a second end view of the lock shown in FIG. 1.

FIG. 4 is a first side view of the lock shown in FIG. 1.

FIG. 5 is a second side view of the lock shown in FIG. 1.

FIG. 6 is a third side view of the lock shown in FIG. 1; and,

FIG. 7 is a fourth side view of the lock shown in FIG. 1.

The broken lines in FIG. 1-7 show portions of the lock that form no partof the claimed design.

CLAIM We claim the ornamental design for a lock, as shown and described.